Gaya APA

Kumar, M., Maul, G, A. (1991). Proceedings International Symposium on Marine Positioning: marine positioning into the 1990's . Rockville: PIP Printing.

Gaya MLA

Kumar, Muneendra., Maul, George, A.. "Proceedings International Symposium on Marine Positioning: marine positioning into the 1990's". Rockville: PIP Printing, 1991. Text.